Up-conversion luminescence efficiency in Er-doped chalcogenide glasses

Spectroscopic studies of Er3+ doped Ge-Ga-S glass containing silver nanoparticles

“…[1][2][3][4][5][6][7][8]. In addition to the common advantages of low-phonon energy, good infrared transparency, good chemical durability, large refractive index, and good glass-forming ability of some other chalcogenide glasses, the Ge-Ga-S system has a relatively larger band gap among chalcogenide glasses and a better rare-earth doping ability than that of the Ge-Sb-S system [9,10].…”

Up-conversion fluorescence and low-temperature emission in Er3+-doped GeGaS–CsBr glasses

“…The up-conversion efficiency depends mainly on such characteristics as thermal stability, high refractive index, enhanced RE solubility and suitable electronic structure of RE ions [4,5]. It has been reported [6] that the up-conversion luminescence depends on statistically uniform distribution of RE ions in glassy host and on the position of the absorption edge due to nonradiative energy exchange between the electronic subsystem of the host and occupied excited levels of RE ions. The uniformity and the shift of the absorption edge to higher energy increase the efficiency of upconversion.…”

“…Among the chalcogenides, Ge-Ga-S glasses can dissolve relatively large amounts of Er, compared to other systems [4][5][6][7]. Recently we have investigated the low-temperature photoluminescence (PL) of Er-doped Ge-Ga-S glasses excited via the host absorption [8].…”

Features in the photoluminescence line-shape of heavily Er-doped Ge–S–Ga glasses

“…Among the Ge-based sulfide systems, recently Ge-S-Ga glasses have been intensively studied because of the enhanced RE solubility in this glass system [5][6][7][8]. The present paper deals with evaluation of the relative changes in the PL line-shape of heavily Er-doped (GeS 2 ) x (Ga 2 S 3 ) 100Àx glasses.…”